Ask HN: How do you back up your drives?

I'm currently going through a meltdown because my Drobo, which is supposed to give users "redundant protection", has corrupted +4TB of data: years of photos, all my music, all docs that go from way back at university to personal projects, raw video files... everything. I just want to know what HN users use to backup their data, drives, etc. I haven't heard good things from Backblaze, Crashplan, etc, so I was wondering if there are other alternatives. Thanks